added multiprocessing for peaksAndModel function
parallel examples draft
BF: the multi_voxel_model decorator couldn't be pickled and therefore used with multi processing. The solution was to decorate only the fit method and not the entire model.
Updated csdeconv, dsi and gqi to work with the new multi_voxel_fit decorator
change numpy arrays to memmaps to reduce memory usage
cleanup the example
wip
increase the number of job to speedup the computation
cleaned examples code
changed permissions on /dev/shm so that multiprocessing might work
changed /dev/shm to a soft link to /run/shm, trying to fixe mp issue
fixed doctest error in DiffusionSpectrumModel.__init__
added a comment on travis issue #155
fixed error in comments and added default parameter values to peaks_from_model
uses 1 tmp directory for all memmap tmp files in peaks_from_model_parallel
renamed variable
code formatting
changed tab to space
fixed typo
trying fixing the doctest error of travis